Privnote alternative: Coprinus
Looking for a Privnote alternative? Coprinus does the same thing: it sends a note that disappears after a single read. The core is similar: encryption in the browser, the key in the link, one-time read. Coprinus adds transparency (we show step by step how it works), EU hosting and a refined design. Privnote has years behind it, recognition, and an email read receipt. Here is an honest comparison.
At a glance
| Coprinus | Privnote | |
|---|---|---|
| Encryption in the browser | Yes | Yes |
| Key only in the link (after #) | Yes | Yes |
| Disappears after one read | Yes | Yes |
| Password (optional) | Yes | Yes |
| Self-destruct timer | Yes | Yes |
| Anti-bot screen (scanners won't burn the link) | Yes | Yes |
| Email read receipt | No | Yes |
| Step-by-step “how it works” | Yes | General |
| Hosting and jurisdiction | EU, Frankfurt (GDPR) | USA |
| Design and education | Strong focus | Minimal |
| Price | Free | Free + business plan |
Don't trust the table. See for yourself.
Privnote tells you it's encrypted. We show you: type a secret and watch the only thing that ever reaches our server.
You write · on your side
↓ on the way to us it turns into ink
Our server sees
Here's what the server receives. Nothing yet, because you haven't written anything.
The note's content is noise. The key stays in your browser, never with us.
Security and privacy
Both tools encrypt the note on the client and keep the key in the link, after the # sign, so the server only ever sees ciphertext. Coprinus explains this mechanism openly, step by step: the key never reaches us, we only see noise, and on read we delete the note in one inseparable operation. Data sits in the European Union, in the Frankfurt region, which can matter under GDPR.
Features
This is close. Both have a password, a self-destruct timer and a screen that protects the note from link scanners. Privnote has one thing Coprinus does not: an email notification when the note is read. If that is essential for you, it is a point for Privnote.
Trust, design and brand
Privnote is raw, recognizable and has run for years. Coprinus leans into a refined experience and education: it explains why a note disappears and how. It was built at Aloha Fungi, a brand with a clear ethos of data sovereignty, so privacy here is a product promise, not an add-on.
A note on fakes
With self-destructing note tools, always make sure you are on the real domain. Copycats of such services circulate online. This applies to every tool of this kind, including this one and Privnote.
Coprinus is for you if
- •You want to know exactly how it works and why no one has access.
- •You prefer EU hosting (Frankfurt) and GDPR-minded design.
- •You value a refined design and a brand with a privacy ethos.
Privnote may be better if
- •You want a proven, recognizable tool with a long history.
- •You need an email notification when the note is read.
Frequently asked
Is Coprinus a good Privnote alternative?
Yes. It gives the same core (browser encryption, key in the link, one-time read) plus transparency, EU hosting and a refined experience.
Can anyone read my note?
They should not. The content is encrypted in your browser, and the key stays in the link, after the # sign, and never reaches us. Without the key we only see noise.
Does the note really disappear?
Yes. The first open removes it from the server in one operation. There is no second read and no copy remains.
Where is the data stored?
In the European Union, in the Frankfurt region.
Is Coprinus free?
Yes, sending vanishing notes is free.